<oerjan> learn print_args_or_input Is a utility command that makes it easy to create a shell script that can be used either as a pipe or directly as a HackEgo command. Use as print_args_or_input "$@" | yourShellCode . See also shebang_args_or_input.

|a+b@| = { √(a²-b²) if a²-b² ≥ 0 ; i√(a²-b²) if a²-b² < 0 }